Draw-knife.



r Patented Feb. I3, |900. I. S. BAILEY.

DRAW KNIFE.

(Application filed June 9, 1899.)

(No Mudel.)

ivrTn STATES PATENT Trice.

ISRAEIIS. BAILEY, OF SOUTHINGTON, CONNECTICUT.

DRAW-KNIFE.

SPECIFICATION forming part of Letters Patent No. 643,344, dated February13, 1900.

Application filed June 9, 1899. Serial No. 719,998. (No model.)

T0 all whom it may concern:

Be it known that I, ISRAEL S. BAILEY, of Southington, in the county ofHartford and State of Connecticut, have invented a new Improvement inDraw-Knives; and I do hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepesent, in

Figure l, a plan View of a draw-knife constructed in accordance with myinvention; Fig. 2, a broken View showing one end 0f the knife andindicating; by broken lines the various positions in which one of thehandles may be placed; Fig. 3, a detached broken plan view of the diskat one end of the knife; Fig. 4, a detached sectional view of one of thehandles, together with its handle-head and coupler, which is shown inits normal or operating position; Fig. 5, a corresponding view showingthe coupler in its retired 0r open position; Fig. 6,a perspective viewshowing the coupler dismembered; Fig. 7, a detached perspective'view ofone of the handleheads. p

My invention relates to an improvement in that class of draw or shavingknives which are provided with adjustable and detachable handles, theobject being to provide a simple, compact, strong, effective, andconvenient construction.

l/Vith these ends in view my invention consists in certain details ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointedout in the claims.

In carrying out my invention I employ a draw-knife A and two handles B,all of which may be of` any ordinary construction, except as hereinafterspecied. Each, end of the knife is formed with a shank C, terminating ina fiat coupling-disk D, formed with a central pivot-hole d and threeperipheral notches d', cl2, and d3, the said notches being located atequal distances from each other. Each of the handles is provided with acoupling-head E, having a tang E and formed with two flat circular earsE2 and E3, sufficiently separated from each other to receive one of thedisks D of the knife between them, the ear E2 having a centralpivot-hole E4 and the ear E3 an alined recess E4 formed in its innerface. Each head is also formed with a push-pin hole E5, extendingthrough it near its base and intersecting the space between the lugs E2and E4, as clearly shown in Fig. 7, the said push-pin hole beingparallel with the pivot-hole E4. These ears E2 and E4 of thehandle-heads substantially correspond, at least in diameter, to thedisks D of the blade. Each of the said handle-heads is provided with acoupler, consisting of a heavy pivotpin F, a cross-bar E, a push oroperating pin F2, a spring F2, and a recessed and threaded retainingcapF4,the push-pin F2 being formed upon its inner face with aclearance-notch f, the inner end of which is by preference l0- catedabout in line with the end of the pivotpin F. The outer end of thepush-pin is' reduced in diameter' and threaded for the removableattachment of the internally-threaded retaining-cap F4, the inner faceof which is Aformed with an annular recess f for the reception of theouter end of the spring, though this is not essential. The said couplersare applied to the handle-heads, as shown in Figs. 4 and 5, so that thepush-buttons F will be exposed for convenient manipulation above theupper or outer faces of the heads. Under this arrangement the cross-barsF of the couplers will be located upon the rear or lower faces of theheads, with their pivotpins extending through the pivot-holes E4 oftheir ears E2, through the spaces between the said ears, and into therecesses E4a formed in the inner faces of the ears E2, while theirpushpins will extend upward through the pushpin holes E5 of their headsfor the reception of the springs F3 and the retaining-caps F4. Thenotches f in the push-pins F2 will be 1ocated therein so as to benormally lifted entirely out of alinement with the spaces between theears, as shown in Fig. 4t, and so that the unbroken inner portions ofthe pushpins will enter the notches in the periphery of the disks D.

To apply the handles to the blade, the couplers are forced downwardagainst the tension of their springs, as shown in Fig. 5, so as to forcethe pivot-pins F entirely out of the spaces between the ears of thehandle-heads and so as to bring the notches f of the pivotpins intoalinement with the said spaces,

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which are now cleared for the introduction into them of the disks of theblade, which disks are entered into the said spaces, so as to registertheir central pivot-holes D with the pivot-holes D4 of the ears E4,after which the pressure upon the caps F4 is taken off, so as to leavethe springs FS free to act and enter' the pivot-pins into thepivot-holes E4 of the lower ears E4 of the disks and to enter the lowerends of the push-pins into peripheral notches of the disks according tothe positions of the handles with respect to the knife. To remove thehandles, it is only necessary to force the couplers downward, so as toclear their pivot-pins from the said pivot-hole E4 of the disks and soas to clear their pushpins from the said peripheral notches of thedisks. To adjust the handles into any of the three positions shown inFig. 2, it is only necessary to push the couplers into their openpositions and then swing the handles through an arc of ninety or onehundred and eighty degrees, so as to bring their push-pins into thenotches of the disks for the adjustment desired.

My improved construction, as will be understood from the foregoingdescription, is very simple, convenient, and durable and avoids slottingthe disks at the ends of the blade. My construction, moreover, providesfor locking the detachable handles rigidly upon the disks at the ends ofthe blade through locking-notches formed in the peripheries of thedisks, whereby the maximum of rigidity of coupling between the blade andhandles is secured, as the farther the locking-points are from thecenters of the disks the more advantageous the leverage and the firmerthe coupling. By employing peripheral lockingnotches instead of piercingthe disk near its center or between its center and its edge for theentrance of locking keys or pins I am enabled to employ larger andheavier' locking instrumentalities, which in my device are thepush-pins. Myilnproved handles may, moreover, be very readily detachedfrom the blade, which is a matter of great convenience, because it notonly enables one set of handles to be interchangeably used with a set ofblades varying in size, but also it enables one handle to be detachedwhile the blade is being passed through an opening, after which thehandle is reapplied, thus enabling the drawknife to be used convenientlyin situations where it otherwise could not be used if the handles werepermanently applied.

I would have it understood that I do not limit myself to the exactconstruction herein shown and described, but hold myself at liberty tomake such changes and alterations as fairly fall within the spirit andscope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a draw or shaving knife, the combination with a blade formed ateach end with a disk having a central pivot-hole and one or moreperipheral locking-notches; ot' two detachable handles, each having ahead composed of two ears, and formed with a pushpin hole intersectingthe space between the said ears, one of which is formed with acentrally-arranged pivot-hole; and two movable couplers respectivelymounted in the said handle-heads, and each comprising a pivotpin, and aslotted push-pin, the said pivotpins entering the pivot-holes of thedisks and the pivot-holes of the ears, and the said pushpins enteringthe push-pin holes of the heads, and the peripheral locking-notches ofthe disks from which latter the handles are disengaged by moving thecouplers so as to clear the pivot-pins from the pivot-holes of thedisks, and so as to registerthe slots of the pushpins with theperipheral locking-notches of the disks.

2. In a draw or shaving knife, the combination with a blade formed ateach end with a disk having a central pivot-hole, and one or moreperipheral locking-notches; of two detachable handles, each having ahead composed of two ears,.and formed with a push pinhole intersectingthe space between the said ears, one of which is formed with acentrally-arranged pivot-hole; and two movable couplers respectivelymounted in the said heads, and each comprising a pivot-pin, a slottedpush-pin, a cross-bar uniting the two pins, a spring mounted upon thepush-pin, and a cap applied to the push-pin for securing the springthereto and constituting a push-button, the said pivot-pins entering thepivot-holes ofthe disks and the pivot-holes of the ears, and the saidpush-pins entering the puslrpin holes of the heads and the peripherallocking-notches of the disks from which latter the handles aredisengaged by moving the couplers so as to clear the pivotpins from thepivot-holes of the disks and so as to register the slots of thepush-pins with the peripheral locking-notches of the disks.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ISRAEL S. BAILEY.

Witnesses:

THOMAS F. WELCH,

EMERsoN R. LEwIs.

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